JPS60159469A - Method for press-fitting and securing resilient boot - Google Patents

Abstract

PURPOSE:To aim at expediting the fastening step of a boot onto a shaft with a protruding and recessed part formed in the inner peripheral surface of the boot being engaged with a recessed and protruding part formed in the shaft, by press- fitting the resilient boot onto the shaft with a fastening band being fixed thereonto. CONSTITUTION:When the left end opening 18 of a resilient boot 16 is press-fitted onto the tapered right end section of a shaft 10, a protruding annular section 22 in the inner surface of the resilent boot 16 is clampled between a ring-like fastening band 24 and the tapered section of the shaft 10 to be elastically deformed into a flattened shape, and then resilently recovers its original shape when the boot 16 passes over the top end of the tapered section 12, thereby the boot 16 may be engaged with a recessed groove 14 in the shaft 10 by a single touch. In order to give an optimum fastening force in the condition in which the protruding annular section 22 in the inner surface of the resilient boot 16 is engaged and locked in the recessed groove 14 of the shaft 10, the inner diameter of a ring-like fastening band 28 is selected.

Description

【発明の詳細な説明】 この発明は弾性ブーツの圧入固定方法に関し、一層詳細
には、最も単純かつ安価な単なるリング形状の結合バン
ドをも使用することができ、しかも十分な締結圧力、シ
ール性を確保することのできる極めて施行容易な弾性ブ
ーツの圧入固定方法に関する。[Detailed Description of the Invention] The present invention relates to a method for press-fitting and fixing elastic boots, and more specifically, it is possible to use even the simplest and cheapest simple ring-shaped coupling band, and to provide sufficient fastening pressure and sealing performance. The present invention relates to a method of press-fitting and fixing elastic boots that is extremely easy to implement and that can ensure the following.

従来のいわゆる掌合タイプ、分割タイプの結合バンドを
利用する弾性ブーツの固定方法においては、被締結物と
してのパイプ等のシャフトにシャフト外周径と嵌合する
内径を有する弾性ブーツをはめ込み、このブーツ外周面
から弾性ブーツを締め付ける結合バンドの締め付けを行
うものであって、一般に次のような欠点を有する。すな
わち、結合バンドは、帯状部材や線状部材を縮径するこ
とによって締結力を得るものであるから、弾性ブ−ツの
典型例としてのゴムブーツ外周面に結合ハン（−の内円
面から引張り力が作用することとなり、ゴムフー′ンの
肉厚の偏りが生しやずく、掌合タイプの結合ハンＭｌこ
ついて（Ｊ、レバーのてこ作用による帯状部祠の縮径時
に、レバーの支点に接するゴムブーツに局部的に大きな
荷重が作用して集中歪が生しることがあるため、種々の
方法を用いて荷車分散を図り、ゴムブーツの劣化を防止
し、また支点部のシール性を同士させようとしているが
、原理的にも、いまだ完全に均一な締結力を得ることの
できる掌合タイプの結合バンドは存在しｔ「い。In conventional methods of fixing elastic boots using so-called palm type or split type coupling bands, an elastic boot having an inner diameter that fits the outer diameter of the shaft is fitted onto a shaft such as a pipe as an object to be fastened. This method involves tightening a connecting band that tightens an elastic boot from the outer peripheral surface, and generally has the following drawbacks. In other words, since the binding band obtains the fastening force by reducing the diameter of a band-like member or a linear member, a tensioning force is applied to the outer circumferential surface of a rubber boot, which is a typical example of an elastic boot, from the inner circular surface of the connecting arm (-). As a result of this force being applied, the thickness of the rubber hoon becomes unbalanced, and the joint hand Ml of the palm type gets stuck (J. Since large loads may act locally on the rubber boots that are in contact with them, causing concentrated strain, various methods are used to distribute the carts to prevent deterioration of the rubber boots and improve the sealing properties of the supporting points. However, even in principle, there still does not exist a palm-type coupling band that can obtain a completely uniform fastening force.

一方、分割タイプの結合ハン］、においては、さらに締
め（＝ｔ　＆：Ｉ性が悪くシール不完全となりやすい欠
点を有する。この欠点は、分割タイプのうちでもネジ締
めイ」り式によって強力な締結力を得ようとする場合に
は特に顕著であってゴムブーツの著しい変形をも招くこ
とがあるうえ、締め付は作業性も狭い場所内での使用、
例えば自動車のエンジンルームなどにおける多数の結合
ハフｌ−使用時には著しく低下することとなり、このよ
うな締結作業の迅速化が強く望まれている。On the other hand, split type joint handles have the disadvantage that they have poor sealing properties and are prone to incomplete sealing. This is especially noticeable when trying to obtain fastening force, and can lead to significant deformation of the rubber boots.
For example, when a large number of joint huffs are used in the engine room of an automobile, the strength of the joints decreases significantly, and there is a strong desire to speed up such fastening work.

ごの発明は上記の点に鑑ゐてなされたもので、その目的
とするところは、シャフトの端部外周を先細のテーパー
形状に形成したテーパ一部の上端位置に凹凸係合部を周
設し、シャツｌ−の凹凸係合部と密嵌する凸凹係止部を
内面に周設して成る弾性ブーツの外周面における凸凹係
止部対応位置に締めしるまであらかじめ縮径済みの結合
ハンドを固定した状態のままで弾性ブーツをシャフトの
凹凸係合部に向けて圧入して密嵌し固定することを特徴
とする弾性ブーツの圧入固定方法を提供するにある。The present invention was made in view of the above points, and its purpose is to provide a concave-convex engaging portion at the upper end position of a tapered portion of the outer periphery of the end of the shaft formed into a tapered shape. Then, the connecting hand whose diameter has been reduced in advance until it is tightened to the position corresponding to the uneven locking part on the outer circumferential surface of the elastic boot, which has an uneven locking part surrounding the inner surface that tightly fits into the uneven engaging part of the shirt L-. To provide a method for press-fitting and fixing an elastic boot, which is characterized in that the elastic boot is press-fitted toward the concavo-convex engaging portion of the shaft while the elastic boot is kept in a fixed state, and the elastic boot is tightly fitted and fixed.

以下本発明の実施例につき、図面を参照して詳細に説明
する。Embodiments of the present invention will be described in detail below with reference to the drawings.

第１図において、１０ば左右方向に水平に延びるシャツ
］・であって、その右端近傍には、右端にいくに従って
徐々に縮径していく、先細形状のテーパ一部１２が形成
されている。デーパ一部１２の左端はシャフト１０と同
径であり、テーパ一部１２左端位置に隣接して若干深さ
と比べて幅広となる凹溝１４を周設する。次に弾性ブー
ツ１６につい゛ζ説明する。柔軟かつ十分な弾性を有す
る弾性ブーツ１６はその左端面１１部１８がシャフト１
０外径と締まりばめとなり、弾性ブーツ右端近傍は徐々
に縮径し７ていく蛇腹状部２０をなし、弾性ブー′ン左
端開ロ部１８近傍の内周面には、凸周部２２を形成する
。凸周部２２の形状はシャフト１０の凹溝１４と係合し
て密嵌１に態に係止する形状を成し、凹溝Ｉ４内の左端
面と接する右端面が円滑面に形成されてシール効果を高
めるべく加工がなされている。弾性ブーツ１６の外周面
には弾性ブーツ１６内面の凸周部２２に対応する位置に
リング状結合バンド２４固定用の浅い凹溝２６を形成す
る。ごの浅い凹溝２６内には、従来公知のリング状結合
ハンド２４を弾性ブーツ１６締結時の締めＵ７ろ分まで
シャツｌ−挿入前にあらかじめ縮径しておき、この状態
のままとしておくため、いわゆる締まり径の状態となっ
ている。このリング状結合ハンド２４は、弾性ブーツ１
６が十分な柔軟性と弾性を有している未だシャフトに圧
入していない時点において装着するものであるため、弾
性ブーツを均一に縮径しうるものであれば掌合タイプ、
分割タイプの結合ハンドのみならず、鋼材から成る帯状
部材を端面突き合わせ溶接してなる真円状リング、鋼パ
イプ寸断型の真円状リング、硬質エンジニャリング樹脂
の射出成形品などをも好適に使用することができる。In FIG. 1, 10 is a shirt extending horizontally in the left-right direction, and a tapered portion 12 is formed near the right end of the shirt, the diameter of which gradually decreases toward the right end. . The left end of the tapered part 12 has the same diameter as the shaft 10, and a groove 14 that is slightly wider than the depth is provided adjacent to the left end position of the tapered part 12. Next, the elastic boot 16 will be explained. The left end surface 11 portion 18 of the elastic boot 16 having flexibility and sufficient elasticity is connected to the shaft 1.
The outer diameter of the elastic boot is an interference fit, and the area near the right end of the elastic boot forms a bellows-shaped part 20 whose diameter gradually decreases, and the inner peripheral surface near the open end 18 of the left end of the elastic boot has a convex peripheral part 22. form. The shape of the convex peripheral portion 22 is such that it engages with the groove 14 of the shaft 10 and locks in a tight fit 1, and the right end surface in contact with the left end surface in the groove I4 is formed into a smooth surface. It has been processed to improve the sealing effect. A shallow groove 26 for fixing the ring-shaped coupling band 24 is formed on the outer peripheral surface of the elastic boot 16 at a position corresponding to the convex peripheral portion 22 on the inner surface of the elastic boot 16. In the shallow concave groove 26 of the shirt, a conventionally known ring-shaped connecting hand 24 is pre-reduced in diameter to the extent of tightening U7 when the elastic boots 16 are fastened, and is left in this state. , it is in a state of so-called tightened diameter. This ring-shaped joint hand 24 is connected to the elastic boot 1
6 has sufficient flexibility and elasticity and is to be worn at a time when it is not yet press-fitted into the shaft, so if the diameter of the elastic boot can be uniformly reduced, the palm type,
Suitable for not only split-type joint hands, but also perfect circular rings made by butt-welding end faces of steel band members, perfect circular rings made of cut steel pipes, injection molded products made of hard engineering resin, etc. can be used.

上記構成になる弾性ブーツ１６の左端開口部１８をシャ
ツ（・１０右端のテーパ一部１２に圧入していくと、弾
性ブーツ１６内面の凸周部２２はリング状結合ハンド２
４との間で挟圧され弾性変形して偏平状となり、テーパ
一部１２上端を越えると弾性的に形状を復元していわば
ワンタンチでシャフト１０の凹溝１４内に収まる。この
弾性ブーツ１６内面の凸周部２２がシャフト１０の凹溝
１４内に係合係止した状態において最適の締付力を発揮
するようリング状結合ハンド２８の内径を選択しである
ため弾性ブーツ１６はその全周面にわたって均一な締結
力を、これまでとは異なって弾性ブーツ内周側全面から
受けることとなり極めて均−・な締付けが完了する。ま
た、リング状結合ハンド２４の締結力の他、シャフト１
０の凹溝１４と弾性ブーツ１６の凸周部２２との係合係
止力とが加わって強固・確実な弾性ブーツの締着が行わ
れる。When the left end opening 18 of the elastic boot 16 configured as described above is press-fitted into the tapered part 12 at the right end of the shirt (10), the convex peripheral part 22 on the inner surface of the elastic boot 16 is inserted into the ring-shaped connecting hand 2.
4, it is elastically deformed into a flat shape, and when it exceeds the upper end of the tapered portion 12, it elastically restores its shape and fits into the groove 14 of the shaft 10 in a single motion. The inner diameter of the ring-shaped connecting hand 28 is selected so that the convex circumferential portion 22 on the inner surface of the elastic boot 16 is engaged and locked in the concave groove 14 of the shaft 10, and the inner diameter of the ring-shaped connecting hand 28 is selected. 16 receives a uniform fastening force over its entire circumferential surface, unlike in the past, from the entire inner circumferential side of the elastic boot, and extremely uniform tightening is completed. In addition to the fastening force of the ring-shaped coupling hand 24, the shaft 1
The engagement and locking force between the concave groove 14 of 0.0 and the convex circumferential portion 22 of the elastic boot 16 is added to firmly and reliably fasten the elastic boot.

他の実施例を挙げると１．凹溝１４．２６の深さは、極
めて浅いものであっても位置決め固定には十分有効であ
る他、凹溝２６内に使用するリング状結合ハンド２４は
線材リング２８を使用することもできる。さらに、弾性
ブーツ１６内面の凸周部も極めて浅い凹溝に対応して高
さの極めて低い凸１ｌＩＪ部とすることができる。この
場合においてはリング状結合ハンド２４の締イ］力を高
（してお（のが良い。次に、上記実施例中の弾性ブーツ
１６はそのままとし、第３図のシャフト右側面図に示す
ごとくソヤフｌ−１０のテーパ一部Ｉ２にシャフト１０
の凹溝１４と連通ずる切欠き溝３０を、シャフト１０周
面を数等分する位置に設り、弾性ブーツ１６のシャフト
１０に対する圧入抵抗を減少し圧入を容易とすることが
できる。この他、第４図に示すごとくシャフト１０外周
に凸周部２２を設け、弾性ブーツ１６例の内周面にこの
凸周部２２と密嵌する凹溝１４を形成することによって
も」二記と同様の弾性ブーツ固定を行うことができる。Other examples include 1. Even if the depth of the grooves 14 and 26 is extremely shallow, they are sufficiently effective for positioning and fixing, and a wire ring 28 can also be used as the ring-shaped coupling hand 24 used in the groove 26. Further, the convex peripheral portion on the inner surface of the elastic boot 16 can also be made into a convex portion 1lIJ with an extremely low height corresponding to the extremely shallow groove. In this case, it is better to tighten the ring-shaped coupling hand 24 with a high tightening force.Next, leave the elastic boot 16 in the above embodiment as it is, as shown in the right side view of the shaft in FIG. Shaft 10 is attached to the taper part I2 of Soyaf l-10.
The notch grooves 30 communicating with the grooves 14 are provided at positions dividing the circumferential surface of the shaft 10 into several equal parts, thereby reducing the press-fitting resistance of the elastic boot 16 to the shaft 10 and making press-fitting easier. In addition, as shown in FIG. 4, a convex circumferential portion 22 may be provided on the outer circumference of the shaft 10, and a groove 14 that tightly fits this convex circumferential portion 22 may be formed on the inner circumferential surface of the elastic boot 16. A similar elastic boot fixation can be performed.

どの場合において弾性ブーツ１６の凹溝１４対応位置と
なる外周面に突周部３２を設け、この突周部３２の右側
面底縁と左側面底縁とに線材リング２８を周設しておき
、リング状結合バントとして使用することによって著し
くコストの低減を図るごとができる。この実施例におい
てテーパ一部には前記切欠きａ３０を凸周部２２の左右
の中央部位程度まで設けても良い。なお上記実施例およ
び特許請求の範囲中における弾性ブーツの中には、広い
意味で、ゴム管等をも含めて使用しているものであり１
、さらに、ガラス織物を補強祠として使用する比較的弾
性に乏しいと考えられるような各種部材までをも含めた
概念として使用している。In any case, a protruding peripheral part 32 is provided on the outer circumferential surface of the elastic boot 16 corresponding to the groove 14, and a wire ring 28 is provided around the bottom edge of the right side and the bottom edge of the left side of the protruding peripheral part 32. By using it as a ring-shaped bonding band, it is possible to significantly reduce costs. In this embodiment, the notch a30 may be provided in a portion of the taper up to about the center portion on the left and right sides of the convex peripheral portion 22. It should be noted that some of the elastic boots in the above embodiments and claims include, in a broad sense, rubber tubes and the like.
Furthermore, the concept is used to include various members that are considered to have relatively poor elasticity and use glass fabric as a reinforcement.

なお、凹溝は■溝等のテーパー付の溝であっても良く、
特に良好なシール性を確保するためシール専用の溝を数
条設けても良い。Note that the concave groove may be a tapered groove such as ■ groove,
In order to ensure particularly good sealing performance, several grooves dedicated to sealing may be provided.

ごのように本発明に係る弾性ブーツの圧入固定方法によ
るときは、弾性ブーツの固定が著しく簡略化されるにも
かかわらず弾性ブーツの全内周面に均一な締め付は力が
作用するため締め付けが確実であってシール性に優れ、
その劣化も少ない。As shown in the figure, when using the press-fit fixing method of elastic boots according to the present invention, even though the fixation of the elastic boots is significantly simplified, it is difficult to tighten the elastic boots uniformly on the entire inner peripheral surface because force acts on the entire inner circumferential surface of the elastic boots. Reliable tightening and excellent sealing performance.
Its deterioration is also minimal.

しかも、結合ハントとしてこれまで全く顧みられること
のなかった真円状リングをも使用することができ結合バ
ンドのコス（・を大巾に低下することができ、回転モー
メンＩ−の偏心も存在しないため回転個所に応用するこ
とができる。この他、狭いエンジンルーム内において多
数の弾性ブーツ、ゴム管等を接続しても突起等が全く無
いためスムースな施行が行え、作業性が著しく向上する
という顕著な効果を奏する。Moreover, it is possible to use a perfectly circular ring, which has never been considered as a coupling band, and the cost of the coupling band can be greatly reduced, and there is no eccentricity of the rotational moment I-. Therefore, it can be applied to rotating parts.In addition, even if a large number of elastic boots, rubber tubes, etc. are connected in a narrow engine room, there are no protrusions, so it can be carried out smoothly, significantly improving work efficiency. It has a remarkable effect.

以上本発明につき好適な実施例を挙げて種々説明したが
、本発明はこの実施例に限定されるものではなく、発明
の精神を逸脱しない範囲内で多くの改変を施し得るのは
もちろんのことである。Although the present invention has been variously explained above with reference to preferred embodiments, the present invention is not limited to these embodiments, and it goes without saying that many modifications can be made without departing from the spirit of the invention. It is.

【図面の簡単な説明】[Brief explanation of the drawing]

図面ば本発明にかかる弾性ブーツの圧入固定刃法を示し
、第１図、第４図は圧入前の、第２図、第５図は圧入後
の弾性ブーツ正面部分断面図を示し、第３図はシャフト
右側面図を示す。 １０・・・シャフト、１２・・・テーパ一部。 １４・・・凹溝、１６・・・弾性ブーツ。 １８・・・左端開口部、　２０・・・蛇腹状部。 ２２・・・凸周部、２４・・・リング状結合ハンド、２
６・・・凹溝、２８・・・線材リング、３０・・・切欠
き溝、３２白・突周部。 特許出願人 株式会社　ミハマ製作所 代表者　浜　平 代理人（７７６２）弁理士 ０ 第１図 第２図 第４図 ４ 第５図The drawings show a fixed blade method for press-fitting an elastic boot according to the present invention, and FIGS. 1 and 4 show front partial sectional views of the elastic boot before press-fitting, FIGS. 2 and 5 show partial front sectional views of the elastic boot after press-fitting, and FIG. The figure shows a right side view of the shaft. 10...Shaft, 12...Taper part. 14... Concave groove, 16... Elastic boots. 18... Left end opening, 20... Bellows-shaped part. 22...Convex peripheral part, 24...Ring-shaped joint hand, 2
6... Concave groove, 28... Wire ring, 30... Notch groove, 32 White/projection part. Patent applicant Mihama Seisakusho Co., Ltd. Representative Taira Hama (7762) Patent attorney 0 Figure 1 Figure 2 Figure 4 Figure 4 Figure 5

Claims (1)

【特許請求の範囲】 １、シャフトの端部外周を先細のテーパー形状に形成し
たテーパ一部の上端位置に凹凸係合部を周設し、シャフ
トの凹凸保合部と密嵌する凸凹係１に部を内面に周設し
て成る弾性ブーツの外周面における凸凹係止部対応位置
に締めじろまであらかじめ縮径済みの結合バンドを固定
した状態のままで弾性ブーツをシャフトの凹凸係合部に
向けて圧入して密嵌し固定することを特徴とする弾性ブ
ーツの圧入固定方法。 ２、弾性ブーツの外周面の凸凹係止部対応位置にリング
形状の結合バンドを固定するため凹溝を周設して成る特
許請求の範囲第１項記載の弾性ブーツの圧入固定方法。 ３、テーパ一部にシャフトの凹溝と連通する切欠き溝を
シャフトの周面を等分する位置に複数個設けて成る特許
請求の範囲第１項または第２項記載の弾性ブーツの圧入
固定方法。 ４、結合ハンドが２本の線材リングから成る結合バンド
である特許請求の範囲第１項または第３項記載の弾性ブ
ーツの圧入固定方法。[Scope of Claims] 1. A convex-concave engagement part 1 that has a concave-convex engaging part around the upper end position of a tapered part formed on the outer periphery of the end of the shaft into a tapered shape, and tightly fits with the concave-convex retaining part of the shaft. The elastic boot is attached to the uneven engagement part of the shaft while the connecting band, which has been reduced in diameter in advance up to the tightening limit, is fixed to the position corresponding to the uneven engagement part on the outer circumferential surface of the elastic boot, which has a part circumferentially arranged on the inner surface. A method for press-fitting and fixing elastic boots, which is characterized by press-fitting the boots toward each other and tightly fitting and fixing them. 2. A method for press-fitting and fixing an elastic boot according to claim 1, wherein a concave groove is provided around the outer peripheral surface of the elastic boot in order to fix the ring-shaped coupling band at a position corresponding to the convex-concave locking part. 3. Press-fit fixation of the elastic boot according to claim 1 or 2, wherein a plurality of notched grooves communicating with the grooves of the shaft are provided in the tapered part at positions equally dividing the circumferential surface of the shaft. Method. 4. The method for press-fitting and fixing an elastic boot according to claim 1 or 3, wherein the connecting hand is a connecting band made of two wire rings.